Changes in the activities of selected enzymes of intermediary metabolism in the pyloric caeca and ovaries of asterias rubens during the annual reproductive cycle.
1. Activities of several enzymes of glycolysis, glycerolphosphate cycle, TCA-cycle, beta-oxidation and pentose phosphate cycle were determined in pyloric caeca and ovaries of Asterias rubens during the reproductive cycle. 2. In the ovaries activities of CS and LDH were significantly decreased during ovarian stages 3 and 4, and those of GDH and GAPDH during stage 3 and 4, respectively. 3. In the pyloric caeca activities of GAPDH and LDH were lower in stage 4 and that of GDH in stage 3, whereas those of G6PDH and HOAD were increased in stage 3. 4. Changes observed in enzyme activities are discussed in relation to the reproductive cycle and to the multiple function of the pyloric caeca.
D015094:3-Hydroxyacyl CoA Dehydrogenases / Q000378:metabolism; D000135:Acid Phosphatase / Q000378:metabolism; D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D002950:Citrate (si)-Synthase / Q000378:metabolism; D004064:Digestive System / Q000201:enzymology*; D005260:Female; D005954:Glucosephosphate Dehydrogenase / Q000378:metabolism; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases / Q000378:metabolism; D005993:Glycerolphosphate Dehydrogenase / Q000378:metabolism; D006019:Glycolysis; D007770:L-Lactate Dehydrogenase / Q000378:metabolism; D010053:Ovary / Q000201:enzymology*; D012098:Reproduction; D013215:Starfish / Q000502:physiology*
D005993:Glycerolphosphate Dehydrogenase; D015094:3-Hydroxyacyl CoA Dehydrogenases; D007770:L-Lactate Dehydrogenase; D005954:Glucosephosphate Dehydrogenase; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases; D002950:Citrate (si)-Synthase; D000469:Alkaline Phosphatase; D000135:Acid Phosphatase